Chain link



FIG. 1 is a perspective view of chain link showing the new design;

FIG. 2 is a front elevational view thereof, the rear elevation view being identical thereto;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a left side elevational view thereof, the right side elevation view being identical thereto. 

CLAIM The ornamental design for chain link, as shown and described. 